PIP1 — Sorghum bicolor

Summary

SORBI_3010G087900, also known as SbPIP1, encodes an aquaporin-like protein with channel activity and phospholipase D activity, and is associated with diverse molecular functions including peptide binding, kinase activity, and ubiquitin ligase binding. This sorghum gene on chromosome 10 is associated with cellular water homeostasis, carbon dioxide transport, hydrogen peroxide membrane transport, and circadian regulation of gene expression. It localizes to the plasma membrane, plant-type cell wall, vacuole, chloroplast envelope, and other compartments. SbPIP1 is linked to agronomically important traits including drought stress tolerance, photosynthetic rate, stomatal opening and closure, root and seed growth, flowering time, germination rate, and responses to aluminum, low temperature, bacterial and downy mildew diseases, as well as sodium uptake, phosphorus response, and cadmium concentration. Studies of related genes in other species link the family to root water uptake, stomatal closure, drought and salt stress responses, and grain yield.